A guide for building game interfaces in Summer Engine, such as menus, heads-up displays, health bars, progress bars, and dialogue boxes.

Use it when creating Control-node trees, arranging elements with containers such as vertical or horizontal stacks, setting anchors, and styling interfaces.

It explains how to arrange interface elements so they fit different screen sizes and remain easy to maintain.

ui-basics — Skill for Claude Code by SummerEngine/summer-engine-agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add SummerEngine/summer-engine-agent --skill ui-basics

Clone the repo

git clone --depth 1 https://github.com/SummerEngine/summer-engine-agent

Made for: Claude Code.

Or install summer, the plugin that ships this one along with the rest of its 80 skills, 2 commands, 2 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/summerengine/summer-engine-agent/ui-basics/github.svg)](https://agentmods.dev/skills/summerengine/summer-engine-agent/ui-basics)

Your own site

<a href="https://agentmods.dev/skills/summerengine/summer-engine-agent/ui-basics"><img src="https://agentmods.dev/badge/skills/summerengine/summer-engine-agent/ui-basics/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/summerengine/summer-engine-agent/ui-basics"><img src="https://agentmods.dev/badge/skills/summerengine/summer-engine-agent/ui-basics.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 88 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,622 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00088	$0.01622
Opus 5.5	$0.00035	$0.00649
Sonnet 5.5	$0.00018	$0.00324
Haiku 4.5	$0.00009	$0.00162

Measured 2mo ago against content hash 2a3ed0a4c484, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ui-basics scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/ui-and-ux/ui-basics/SKILL.md · 160 lines

How it starts

The opening of the file, as written. The whole thing — 160 lines — stays where its author put it; the contents beside it link to each section on GitHub.

UI Basics for Summer Engine

Build menus and HUDs using Summer Engine Control nodes. Follow these patterns for layout, buttons, and responsive design.

Control Hierarchy

Use containers for layout, then add content nodes:

Control or CanvasLayer (root)
└── MarginContainer
    └── VBoxContainer (or HBoxContainer)
        ├── Label
        ├── Button
        ├── Button
        └── ProgressBar

Common Containers

Container	Use
MarginContainer	Padding from edges
VBoxContainer	Stack vertically
HBoxContainer	Stack horizontally
CenterContainer	Center child
GridContainer	Grid layout

summer_add_node(parent="./", type="Control", name="MainMenu")
summer_add_node(parent="./MainMenu", type="MarginContainer", name="Margin")
summer_set_prop(path="./MainMenu/Margin", key="anchors_preset", value="15")  # Full rect
summer_set_prop(path="./MainMenu/Margin", key="theme_override_constants/margin_left", value="50")
summer_set_prop(path="./MainMenu/Margin", key="theme_override_constants/margin_right", value="50")
summer_set_prop(path="./MainMenu/Margin", key="theme_override_constants/margin_top", value="50")
summer_set_prop(path="./MainMenu/Margin", key="theme_override_constants/margin_bottom", value="50")

summer_add_node(parent="./MainMenu/Margin", type="VBoxContainer", name="VBox")
summer_add_node(parent="./MainMenu/Margin/VBox", type="Label", name="Title")
summer_set_prop(path="./MainMenu/Margin/VBox/Title", key="text", value="My Game")
summer_add_node(parent="./MainMenu/Margin/VBox", type="Button", name="StartButton")
summer_set_prop(path="./MainMenu/Margin/VBox/StartButton", key="text", value="Start Game")
summer_add_node(parent="./MainMenu/Margin/VBox", type="Button", name="QuitButton")
summer_set_prop(path="./MainMenu/Margin/VBox/QuitButton", key="text", value="Quit")

For nested theme overrides, use summer_set_resource_property if the property is on a resource. For theme_override_constants/margin_left, inspect the live node or the upstream API reference matching the current Summer technical base. Some constants use add_theme_constant_override.

Read the full file on GitHub · 160 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 160 lines · 88 tokens per session scan A 2a3ed0a4c484

Subscribe to this mod's changes

ui-basics is a skill published in the GitHub repository SummerEngine/summer-engine-agent (59 stars, last pushed 1mo ago), licensed MIT. It adds 88 tokens to every session and 1,622 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Design and UX Game development ai ai-game-development ai-game-engine game-development game-engine ui-and-ux

ui-basics next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ui-basicsSummerEngine/summer-engine-agent	Skill	59	1mo ago	MIT	A	88	Claude Code
game-ui-uxgamedev-skills/awesome-gamedev-agent-skills	Skill	6.9k	9d ago	Apache-2.0	A	123	Claude Code
roblox-uigamedev-skills/awesome-gamedev-agent-skills	Skill	6.9k	9d ago	Apache-2.0	A	101	Claude Code, Codex
self-evolvetettethu/VibeGame	Skill	367	24d ago	Apache-2.0	A	50	Claude Code, Codex
artist-self-evolvetettethu/VibeGame	Skill	367	24d ago	Apache-2.0	A	62	Claude Code, Codex
vibegame-buildtettethu/VibeGame	Skill	367	24d ago	Apache-2.0	A	42	Claude Code, Codex
vibegame-starttettethu/VibeGame	Skill	367	24d ago	Apache-2.0	A	61	Claude Code, Codex

ui-basics